Maggiore Electronic Laboratory
DESCR I PT I 0N
This Repeater is an extremely rugged completely solid state Repeater.
State of the art devices such as ICs, FETs, Varactor and Zener diodes are engi-
neered into tight knit straightforward electronic. design throughout both trans-
mitter and receiver. Reliablity,low current demand, compactness, unexcelled
performance and ease of operation are the net result.
The dual conversion receiver with its FET front end and high-Q circuits boasts
low noise and sensitivity of 0.3 uv or less. Signal gain of 90 db or more is
accomplished from the IF amplifier. The need for additional front end RF am-
plification is thus eliminated. Zener regulated crystal-controlled osciHator
produces unmat:ched stability. Audio reproduction is of an unusually high order
of distortion free clarity. Advanced squelch prevents chopping.
The transmitter section on the Mkl will produce a nominal of 15 watts RF output
(25 watts VHF,18 watts UHF on the Mkll). Again, a Zener regulated crystal oscil-
lator is employed for initial frequency stability. High-Q and shielded stages
provide minimum interstage spurious reaction. A low pass filter is placed at the
output to further insure undesirable frequency products not being emitted. On bat-
tery backup, output power drops to 10 watts to conserve battery power.
All circuitry is constructed in a series of modules which are easily removable
for servicing.
A modern style, small size and low profile design compliment the unit.
SECTION 1 lNSTALLATloN
1.1 Unpacking.
Carefully remove your Repeater from the packing carton and examine it for signs
of shipping damage. Should any shipping damage be apparent, notify the deliver-
ing carrier immediately, stating the full extent of the damage. It is recom-
mended you keep the shipping carton in the event storage, moving, or reshipment
becomes necessary.
1.2 Location.
Where you place the Repeater is not very critical and should be governed by con-
venience and accessibility. Since the unit is so compact, many possibilities
present themselves. BE SURE T0 ALLOW FOR PLENTY 0F VENTILATloN BOTH ABOVE AND
BELOW THE REPEATER. A FAN MOUNTED IN THE REAR WITH AIR FLOW DIRECTED TOWARD
THE POWER AMPLIFIER WOULD BE ADVANTAGEOUS, BUT NOT NECESSARY IF TEMPERATURES
REMAIN BELOW 900 FARENHEIT.
1.3 Power Requirements.
The Standard Repeater is supplied ready to operate from any 110v ac 60 cy source.
A 12 volt battery negative ground system may also b,£ incorporated. Some pre~
cautions must be taken however to the condition
Items such as low battery, poor voltage regulat
tion of your Repeater.
f the electrical system.
n,`etc., will impair opera-
